package com.woniumall.web;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.woniumall.util.AlipayConfig;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @auther linke
 * @create 2021-11-01 9:11
 */
@WebServlet("/alipay/*")
public class alipay extends BaseServlet {
    //支付页面
    public  void pay(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);

        //设置请求参数
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);

        //商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = "tom";//new String(request.getParameter("WIDout_trade_no"));
        //付款金额，必填
        String total_amount = "tom";//new String(request.getParameter("WIDtotal_amount"));
        //订单名称，必填
        String subject = "tom";//new String(request.getParameter("tom"));
        //商品描述，可空
        String body = "";//new String(request.getParameter("123"));

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"total_amount\":\""+ total_amount +"\","
                + "\"subject\":\""+ subject +"\","
                + "\"body\":\""+ body +"\","
                + "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");

        //若想给BizContent增加其他可选请求参数，以增加自定义超时时间参数timeout_express来举例说明
        //alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
        //		+ "\"total_amount\":\""+ total_amount +"\","
        //		+ "\"subject\":\""+ subject +"\","
        //		+ "\"body\":\""+ body +"\","
        //		+ "\"timeout_express\":\"10m\","
        //		+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");
        //请求参数可查阅【电脑网站支付的API文档-alipay.trade.page.pay-请求参数】章节
        //请求
        String result = null;
        try {
            result = alipayClient.pageExecute(alipayRequest).getBody();
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        //输出
	    response.getWriter().write(result);
    }

    //支付成功后   异步进行的修改
    public void update(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("修改订单表");
    }
    //支付成功后   同步跳转回支付界面
    public void show(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        System.out.println("支付界面");
    }

}
